Patents by Inventor Carl E. Hewson

Carl E. Hewson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5556425
    Abstract: An esophageal/stomach placement electrode comprises a flexible tubular member designed to be inserted into the esophagus and/or stomach. An electrode is carried by the tube in the region of its distal end. The tube is hinged by its distal end which enables the end of the tube to laterally actuate in the esophagus or the stomach. An actuating mechanism is disposed in the tube in the region of the hinge and is controlled from a point external to the body for causing the distal end of the tube to actuate laterally, and engage the esophagus or stomach with it. The inner portion of the hinge is more bendable than the outer portion. Additionally, the control cables are all within the tubular member.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: September 17, 1996
    Assignee: Brunswick Biomedical Technologies, Inc.
    Inventors: Roy Hewson, J. Richard Hewson, Carl E. Hewson
  • Patent number: 5197491
    Abstract: An esophageal-stomach displacement electrode comprises a flexible tubular member designed to be inserted through the esophagus into the stomach. An electrode is carried by the tube in the region of its distal end. The tube is hinged near the distal end which enables that end of the tube to displace angularly in the stomach and displace the stomach wall. The stomach wall displacement may occur by angularly displacing the distal end or by otherwise pulling the tube partially out of the esophagus after its distal end partially displaced toward the stomach wall. A displacement mechanism is disposed in the tube in the region of the hinge and is controlled from a point externally of the body for causing the distal end of the tube to displace angularly, and to be positioned to engage and displace the stomach.
    Type: Grant
    Filed: February 12, 1991
    Date of Patent: March 30, 1993
    Assignee: Brunswick Biomedical Technologies, Inc.
    Inventors: John Anderson, Carl E. Hewson, David Cochran
  • Patent number: 5170803
    Abstract: An esophageal displacement electrode comprises a flexible tubular member designed to be inserted into the esophagus. An electrode is carried by the tube in the region of its distal end. The tube is hinged near the distal end which enables that end of the tube to displace laterally in the esophagus and laterally displace the esophagus. A displacement mechanism is disposed in the tube in the region of the hinge and is controlled from a point externally of the body for causing the distal end of the tube to displace laterally, and engage and displace the esophagus with it.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: December 15, 1992
    Assignee: Brunswick Biomedical Technologies, Inc.
    Inventors: Carl E. Hewson, John R. Hewson
  • Patent number: 5052390
    Abstract: When the heart is in ventricular fibrillation, the heart cells that stimulate the heart muscles produce rapid repetitive excitation without coordinated contraction of the ventricle. There is no effective simultaneous action to make the heart beat in a ryhthmic fashion. A defibrillator delivers to the heart cells and muscles, enough voltage to override the erratic voltages in the heart (called repolarization) so they can rearrange themselves with order. The heart can then start over to deliver a regular rhythm.Atrial defibrillation is achieved with an internal esophageal electrode and an external chest electrode placed approximately on a line between the two nipples and part way between the sternum and the left nipple. This provides a precise path for the defibrillating pulse and consequently a very efficient path, so that defibrillation is accomplished with very low power of 30 to 70 joules (average 50 joules) compared to what is normally used, namely, 100 to 360 joules.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: October 1, 1991
    Inventor: Carl E. Hewson
  • Patent number: 5036848
    Abstract: A method of stimulating breathing which comprises the steps of positioning a non-invasive internal electrode in the esophagus and two external electrodes on the chest. A pulsed stimulation of approximately two seconds duration is interposed across the electrodes with a magnitude of the successive pulses in each stimulation increasing linearly. An interval of approximately three seconds is interposed between successive stimulations. In a preferred embodiment of the invention, the polarity of successive electrical stimulations is reversed.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: August 6, 1991
    Assignee: Brunswick Biomedical Technologies, Inc.
    Inventor: Carl E. Hewson
  • Patent number: 4960133
    Abstract: A technique has been devised to pace the heart, defibrillate the heart, or ventilate the lungs of a patient using extremely low electrical power. These techniques use an internal esophageal electrode as the basic common terminal with chest electrodes positioned to direct a particular current to a particular place depending on whether pacing, defibrillation or ventilation is to be accomplished. In accordance with the present invention a particular configuration of multiple ring electrodes has been devised to facilitate these techniques.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: October 2, 1990
    Assignee: Brunswick Manufacturing Co., Inc.
    Inventor: Carl E. Hewson
  • Patent number: 4735206
    Abstract: When the heart is in ventricular fibrillation, the heart cells that stimulate the heart muscles produce rapid repetitive excitation without coordinated contraction of the ventricle. There is no effective simultaneous action to make the heart beat in a rhythmic fashion. A defibrillator delivers to the heart cells and muscles, enough voltage to override the erratic voltages in the heart (called repolarization) so they can rearrange themselves with order. The heart can then start over to deliver a regular rhythm.In accordance with the present invention, two small intimately located electrodes, one in the lower esophagus where it is intimate to the posterior section of the heart and the other small electrode on the chest over the sternum where it is close to the anterior portion of the heart, provide a precise electrical path between the two electrodes.
    Type: Grant
    Filed: October 7, 1986
    Date of Patent: April 5, 1988
    Assignee: Brunswick Manufacturing Co., Inc.
    Inventor: Carl E. Hewson
  • Patent number: 4683890
    Abstract: The invention relates to apparatus for inducing humans to breathe and comprises a first internal electrode having a contact which is disposed in the lower portion of the esophagus, and second and third external electrodes which are placed over the left and right sides of the chest on the pectoral muscles in the area of the nipples above the rib cage. An electrical circuit is connected to the electrodes and imposes a pulsed charge between the internal and external electrodes which stimulates the muscles of the diaphragm causing the patient's lungs to expand, which is the same as taking a breath. The pulsed charges will be at the rate of approximately 10 to 18 pulses per minute. With a pulse rate of 12 per minute each pulse increases from zero to maximum in approximately two seconds, followed by a drop to zero with a dwell period of approximately three seconds. The pulse is limited to approximately 100 milliamperes and a selected variable voltage of up to 50 volts.
    Type: Grant
    Filed: October 2, 1986
    Date of Patent: August 4, 1987
    Assignee: Brunswick Manufacturing Co., Inc.
    Inventor: Carl E. Hewson